A network refers to a group of interconnected computers, devices or systems that enable communication, data sharing and resource allocation among them. In short, it’s a collection of networked devices that can communicate with each other and share information.
For example, the internet is a global network of computers and other devices that are connected together to share data and other resources. Another example could be a local area network (LAN) within an office building, connecting all the computers and devices that are used by employees to share files, printers and other resources. Wireless networks like Wi-Fi provide users with access to the internet and each other, without the need for cables or wires.
A network is a collection of interconnected devices that share resources and communicate with each other.
Networks are used for a variety of purposes, including file sharing, messaging, and Internet access.
The most common types of networks are local area networks (LANs), wide area networks (WANs), and wireless networks (WLANs).
LANs are typically used in homes, schools, and offices, while WANs are used to connect geographically disparate locations.
Networks can be either wired or wireless, with each type having its own set of advantages and disadvantages.
Network security is an important consideration, and measures such as firewalls, encryption, and access controls are used to protect against unauthorized access.
Network protocols such as TCP/IP, HTTP, and FTP are critical for data communication and the functioning of the Internet.
Network performance is measured by factors such as latency, throughput, and bandwidth, and can be optimized through technologies such as quality of service (QoS) and network optimization.
The growth of cloud computing and the Internet of Things (IoT) is leading to increased demand for reliable and high-performance networks, driving innovation in network technologies and services.
What is the difference between a hub and a switch?
Answer: A hub broadcasts all incoming data to all connected devices, whereas a switch only sends data to the intended recipient.
What is a subnet mask?
Answer: A subnet mask is used to define the network and host portions of an IP address in order to facilitate communication between devices on a network.
What is the difference between TCP and UDP?
Answer: TCP is a reliable protocol used for transmitting data that requires confirmation of receipt, while UDP is an unreliable protocol used for transmitting data that does not require confirmation of receipt.
What is a MAC address?
Answer: A MAC address is a unique identifier assigned to a network interface controller (NIC) for use as a network address in communications within a network segment.
What is a DNS server and what does it do?
Answer: A DNS server is a network server that translates domain names into IP addresses, allowing devices to access web pages or other resources on the internet using easy-to-remember domain names instead of numerical IP addresses.